Smoke alarm



FIG. 1 is a perspective view of a smoke alarm;

FIG. 2 is a front view of a smoke alarm;

FIG. 3 is a right side view of a smoke alarm;

FIG. 4 is a left side view of a smoke alarm;

FIG. 5 is a top view of a smoke alarm;

FIG. 6 is a bottom view of a smoke alarm; and,

FIG. 7 is a rear view of a smoke alarm.

In the drawings, the broken lines indicate the inner boundaries of the rear flat surface of the claim. The broken lines form no part of the claim. 

The ornamental design for a smoke alarm, as shown. 